Everything you Need to Know about PFC Steel Beams
17 August 2020
When it comes to construction, choosing the right steel channel size is crucial for ensuring the structural integrity and safety of the building. Steel channel sizes, also known as PFC (Parallel Flange Channels), are available in various sizes, and selecting the right size for your project can be daunting.
In this article, we will guide you on how to choose the right steel channel size for your construction project, and we will provide you with information on steel channel sizes, their uses, and their benefits.
What is a Steel Parallel Flange Channel?
Parallel flange channels (PFCs for short) are some of the most versatile types of steel beams. Generally made from hot-rolled structural steel, PFC channel dimensions, thicknesses and sizes can vary significantly, with all products retaining that noticeable C-shaped cross-section. This is why they are commonly referred to as C channel beams or C sections.
PFCs are used as a load-bearing element in construction and engineering projects. They come in various sizes, each with different features and benefits. They are made from hot-rolled steel, and their cross-sectional shape allows them to bear significant weight without distorting.
The unique shape and design of parallel flange channels make them incredibly versatile, robust and suitable for a variety of construction applications. But you may be wondering whether you should consider using PFC channel over other structural steel beams?
How do they Differ from Other Steel Beams?
Universal columns (UCs) and universal beams (UBs, commonly known as I beams) are other popular types of structural steel support beams. While all these products are durable, stable and reliable, C section beams are notable by their distinct shape. UCs and UBs are similar in appearance, with UBs having a greater height than width, while UCs are essentially equal in height and width.
The load-bearing capabilities of a PFC beam will, of course, be different than these other beams; for each nominal size, there are sections with varying flange and web thicknesses. This allows structural engineers to specify which steel beam is going to be more efficient and structurally stable. If a project involves working on specific areas of the same size, but with different required weights, extra steps will need to be taken to ensure consistency and stability all around. PFCs only have one particular weight per serial size.
This allows structural engineers to specify which steel beam will be more efficient and structurally stable. If a project involves working on specific areas of the same size but with different required weights, extra steps will need to be taken to ensure consistency and stability all around. PFCs only have one particular weight per serial size.
PFC steel channels are frequently used alongside steel I beams and H beams to provide additional support where needed.
Steel Channel Sizes
Each size of steel channel is designated a unique code identifying its dimensions. This code comprises the prefix PFC, or Parallel Flange Channel, followed by a number showing the depth of the channel in millimetres. So a PFC 150 channel has a depth of 150mm.
The flange width, flange thickness, web thickness, and weight per meter also needs to be considered when choosing a steel channel size. These dimensions vary with each size of the steel channel, and they determine the channel's load-bearing capacity and overall strength.
How to Choose the Right Steel Channel Size
The four main factors to consider when choosing the right steel channel size for your construction project are:
1. Load-Bearing Capacity
The most critical factor to consider when selecting the right size of the steel channel is the load-bearing capacity. That’s because it needs to support the weight of the structure plus any extra loads like snow. To determine the load-bearing capacity of a steel channel, consult a structural engineer or use manufacturers’ load tables.
2. Span Length
The distance between two steel channel supports is the span length. It is crucial to consider this when choosing the right steel channel size. That’s because a longer span length requires a larger steel channel size to support the structure's weight.
3. Environmental Conditions
If the building site is located in a region with high wind or snow loads, a larger steel channel may be required to ensure the safety and stability of the structure.
4. Aesthetic Considerations
A larger steel channel size may affect the structure's appearance of the structure so it may not always be the best choice.
Uses for PFC Steel Beams
Steel channels like PFCs can be used in a wide range of structural applications. Some common parallel flange channel uses include (though are not limited to):
Window and door frames
Parallel flange channel beams can be used to create a structurally secure frame for windows and doors. The channel can simply be slid over the wall in the window or door opening, creating a solid lintel, which offers much more sturdiness and long-term stability than timber.
Vehicle frames
For larger vehicles which require reliable structural support, steel channel can be used to strengthen the framing. Channel like this can be used for primary frame rails, cross members or braces. Fitting the channel allows for enough movement of the structure, without it flexing too much.
Roofing
Steel channel can be used to support heavy-duty roof decks, while also acting as excellent trusses. These rolled steel beams can support large amounts of weight, and last longer than wooden trusses.
Wall structures
PFCs are often used as back-to-back steel sections to support walls. If you have a wall that needs to be structurally reinforced, you can position these steel beams on either side and bolt them together. Welding a C channel beam to a steel flat bar or plate creates a lintel of sorts; one side (the top half of the PFC) has an excellent load-bearing profile, while the other side (the remainder of the plate) can support other loads at the same time.
Floor joist support
C sections are also adaptable to provide additional support to general floor areas, including mezzanine floors. Many steel fabricators can weld steel C beams to support the majority of floor applications.
Benefits of Steel Channels
The top five benefits of using steel channels include:
1. High Strength and Durability
Steel channels can withstand significant weight without bending or twisting. That’s because they’re made from hot-rolled steel and are very strong and durable.
2. Versatility
Their versatility means that steel channels can be used in various construction projects, such as building frames, bridges, and industrial structures.
3. Cost-Effective
Steel channels are more cost-effective than other load-bearing elements like concrete or timber.
4. Easy to Install
A great thing about steel channels is that they’re easy to install and require minimal labour compared to other load-bearing elements like reinforced concrete.
5. Resistant to Fire
Because they’re highly fire resistant, steel channels are a popular choice in construction projects where fire resistance is critical.
FAQs
Can steel channels be welded?
They can be welded together to create longer sections or to join them to other load-bearing elements. Proper welding procedures must be followed to ensure the welds are of high enough quality and strength.
Can steel channels be cut to size?
Yes, various cutting methods, such as sawing, shearing, or plasma cutting, can be used to cut steel channels to the desired size. The correct cutting tools and techniques must be used to ensure accurate cuts and to avoid risking damage to the steel channel.
Conclusion
The benefits of steel channels, such as high strength and durability, versatility, cost-effectiveness, and ease of installation, are huge. But it’s important to understand steel channels' different sizes and dimensions, their uses, and their benefits. Consider factors such as load-bearing capacity, span length, environmental conditions, and aesthetic considerations. Then you can make an informed decision and choose the right steel channel size for your construction project.
Order PFC Beams with Buy A Beam
Now that you know more about what PFCs can be used for, you may be wondering how you can buy steel online. Look no further than Buy A Beam!
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If there’s a local structural steel fabricator and supplier near you, your order will go straight to them, and you’ll be kept in the loop about your order status. If there is no steel supplier in your local area, you can still order as normal and upload your plans, and the Buy A Beam team will liaise with our reliable network of suppliers to fulfil your requirements.
If you need any help with our services, please don’t hesitate to get in touch with Buy A Beam today.